1 /*

     2 * Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Interface class to notify database changes to SongHistoryView

    15 *

    16 */

    17 

    18 

    19 #ifndef IR_SONGHISTORYUINOTIFYHANDLER

    20 #define IR_SONGHISTORYUINOTIFYHANDLER

    21 

    22 #include <e32cmn.h>

    23 

    24 /**

    25 * Observer interface for CIRSongHistoryView.

    26 * Notifies the view when new data is received.

    27 */

    28 class MSongHistoryUINotifyHandler

    29     {

    30 		public:

    31 

    32 			/**

    33 			* Invoked from CIRSongHistoryDbEng when new entry is added to the database.

    34 			* @param    aSongName

    35 			* @param    aArtistName

    36 			* @param    aChannelName

    37 			* Parameters yet to be decided.

    38 			*/

    39 				virtual void NextSongReceivedL( const TDesC& aSongName, const TDesC& aArtistName,

    40 							 const TDesC& aChannelName, const TDesC& aChannelUrl ) = 0;

    41 

    42 				virtual void ChannelChangedL( const TDesC& aSongName, const TDesC& aArtistName,

    43 						 const TDesC& aChannelName, const TDesC& aChannelUrl ) = 0;

    44 

    45 			/**

    46 			* Invoked from CIRSongHistoryDbEng when new entry is added to the database which *would exceed 30 entries.

    47 			* @param    aSongName

    48 			* @param    aArtistName

    49 			* @param    aChannelName

    50 			*/

    51 				virtual TInt RemoveSongEntry( const TDesC& aSongName, const TDesC& aArtistName,

    52 						const TDesC& aChannelName, const TDesC& aChannelUrl ) = 0;

    53 

    54 				virtual TInt RemoveChannelEntry( const TDesC& aSongName, const TDesC& aArtistName,

    55 							const TDesC& aChannelName, const TDesC& aChannelUrl ) = 0;

    56 

    57 			/**

    58 			* Invoked when an error occurred while notifying to UI.

    59 			* @param    aError      The error code.

    60 			*/

    61 				virtual void NotifyDataChangeToUIError( TInt aError ) = 0;

    62 

    63     };

    64 

    65 #endif //IR_SONGHISTORYUINOTIFYHANDLER